Malignant melanoma is responsible for the majority of
skin cancer-related deaths. The methods of
cancer treatment include surgical removal,
chemotherapy,
immunotherapy, and targeted
therapy. However, neither of these methods gives satisfactory results. Therefore, the development of new anticancer therapeutic strategies is very important and may extend the life span of people suffering from
melanoma. The aim of this study was to examine the effect of
ketoprofen (KTP) and UVA radiation (UVAR)
therapy on cell proliferation, apoptosis, and cell cycle distribution in both melanotic
melanoma cells (COLO829) and human melanocytes (HEMn-DP) in relation to its supportive effect in the treatment of
melanoma. The
therapy combining the use of pre-incubation with KTP and UVAR causes a significant increase in the anti-proliferative properties of
ketoprofen towards
melanoma cells and the co-exposure of melanotic
melanoma cells induced apoptosis shown as the mitochondrial membrane breakdown, cell-cycle deregulation, and DNA fragmentation. Moreover, co-treatment led to GSH depletion showing its pro-apoptotic effect dependent on ROS overproduction. The treatment did not show a significant effect on normal cells-melanocytes-which indicates its high selectivity. The results suggest a possible benefit from the use of the
ketoprofen and ultraviolet A irradiation as a new concept of melanotic
melanoma therapy.